Different methodologies have been adopted in the XAI literature. Wang et al. [1]} categorised these research methodologies into three groups:
First, Wang et al. [1]} highlighted the existence of unvalidated guidelines for the design and evaluations of explanations. The authors in [1]} claimed that these kinds of guidelines are based on authors' experiences with no further substantial justification.
Second, researchers suggested (in [4]}) that understanding users' requirements is helpful in XAI research. It is on this premise that previous research on explanation design has been thought to be empirically derived. This type of XAI research elicits explanation requirements from user surveys in order to determine the right explanation for a use-case with explanation interfaces.
Third, some explanation design methods are derived from psychological constructs from formal theories in the academic literature. Some of these methods (e.g., in [5]}) draw on theories from cognitive psychology to inform explanation design for explanation frameworks. Our work is heavily grounded on empirical studies that applied the think-aloud methodology [6]}.
